The Territorial Defense of the Republic of Slovenia (Slovene: Teritorialna obramba Republike Slovenije (TO RS)), also known as the Territorial Defense of Slovenia (Slovenian: Teritorialna obramba Slovenije [TOS]), was the predecessor of the Slovenian Armed Forces.

After the 1968 Warsaw Pact invasion of Czechoslovakia, the Yugoslav leadership adopted the doctrine of General People's Defence[1] and established the Territorial Defense.

After the victory of democratic parties in the 1990 Slovenian parliamentary election, the central government in Belgrade ordered disarmament of TO Slovenia, a decision that was effectively ignored.

Many weapons subsequently disappeared from supply depots and were later issued to the initial territorial defence units of the Republic of Slovenia.

After 1990 it was organized as a separate army, which was finally formed in the months before independence, in accordance with the Slovenian Constitution, which had been adopted in 1991.